Terminal, radio communication system and radio communication method

Abstract

A terminal can control an execution of a conditional handover and an execution of a procedure for an addition/change of a secondary cell, and transmit a radio resource control layer message. When the conditional handover and the procedure for the addition/change are configured simultaneously, or when an execution condition of the conditional handover and an execution condition of the procedure for the addition/change are met simultaneously, the terminal prioritizes either the conditional handover or the procedure for the addition/change according to a state of the message.

1 . A terminal comprising:
 a control unit that controls an execution of a conditional handover and an execution of a procedure for an addition/change of a secondary cell; and   a transmission unit that transmits a radio resource control layer message, wherein   when the conditional handover and the procedure for the addition/change are configured simultaneously, or when an execution condition of the conditional handover and an execution condition of the procedure for the addition/change are met simultaneously, the control unit prioritizes either the conditional handover or the procedure for the addition/change according to a state of the message.   
     
     
         2 . A terminal comprising:
 a control unit that controls an execution of a conditional handover and an execution of a procedure for an addition/change of a secondary cell; and   a transmission unit that transmits a report relating to at least either a radio link failure or a handover, wherein   the control unit determines contents of the report according to an execution of the conditional handover or an execution of the procedure for the addition/change.   
     
     
         3 . A radio communication system including a terminal and a radio base station,
 the terminal includes:   a control unit that controls an execution of a conditional handover and an execution of a procedure for an addition/change of a secondary cell; and   a transmission unit that transmits a radio resource control layer message, and   the radio base station includes a reception unit that receives the message, wherein   when the conditional handover and the procedure for the addition/change are configured simultaneously, or when an execution condition of the conditional handover and an execution condition of the procedure for the addition/change are met simultaneously, the control unit prioritizes either the conditional handover or the procedure for the addition/change according to a state of the message.   
     
     
         4 . A radio communication system including a terminal and a radio base station,
 the terminal includes:   a control unit that controls an execution of a conditional handover and an execution of a procedure for an addition/change of a secondary cell; and   a transmission unit that transmits a report relating to at least either a radio link failure or a handover, and   the radio base station includes a reception unit that receives the report, wherein   the control unit determines contents of the report according to an execution of the conditional handover or an execution of the procedure for the addition/change.   
     
     
         5 . A radio communication method comprising:
 a step of controlling an execution of a conditional handover and an execution of a procedure for an addition/change of a secondary cell;   a step of transmitting a radio resource control layer message; and   when the conditional handover and the procedure for the addition/change are configured simultaneously, or when an execution condition of the conditional handover and an execution condition of the procedure for the addition/change are met simultaneously, a step of prioritizing either the conditional handover or the procedure for the addition/change according to a state of the message.   
     
     
         6 . A radio communication method comprising:
 a step of controlling an execution of a conditional handover and an execution of a procedure for an addition/change of a secondary cell;   a step of transmitting a report relating to at least either a radio link failure or a handover; and   a step of determining contents of the report according to an execution of the conditional handover or an execution of the procedure for the addition/change.